Results from a 'small box' realtime molecular contamination monitor on STS-3On the basis of early estimates of the Shuttle induced environment, Scialdone (1979) concluded that in the vicinity of the cargo, the cargo would have the largest influence on the environment. As a contamination control device, realtime monitors can indicate safe operational periods for sensitive attached payloads. It was, therefore, decided to develop the OSS-1/Contamination Monitor Package (CMP) experiment which was seen as a forerunner of an operational monitor. A description of the CMP is provided, taking into account four actively temperature controlled quartz crystal microbalances (TQCM). The TQCM temperatures could be varied from -60 C to +80 C. The sensor consisted of a matched pair of quartz crystals. The crystals were designated as a sensor and reference crystal. Results obtained during the STS-3 mission are discussed. These results show the feasibility and advantages of a small real-time contamination monitor.
Document ID
19830054832
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Triolo, J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kruger, R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Mcintosh, R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Maag, C. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)